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diamondnexuslab is well known for selling cubic zirconia
and for having a confusing website that has many people believe
they sell synthetic diamonds. Just google them.

http://www.betterthandiamond.com/diamondnexuslabs/DiamondNexusLabsMaterial.pdf

Same chemical formula means carbon in the crystalline structure of diamond that
is called diamond cubic after diamonds.
Of course, impureties are allowed but cubic zirconia is 0% carbon.

Yes I am the grandparent.

Actually I bought a product from another company recently that uses a somewhat similar process. They use vapor deposition to coat a well cut synthetic simulant with diamonds. This leads to probably the best price/performance in the gem area because it is much cheaper to have a gemcutter cutting synthetics and then plating the perfect ones than it is to grow lots of diamonds and have them cut attempting to get a perfect cut. Btw the company is Better Than Diamonds and the trade name of their simulant with the coating is Asha. After my wife lost her half carat diamond earings I refused to replace them with another set of real diamonds after being awakened to the dual evils of blood diamonds and the De Beers cartel. So I found these and got her 2 carat earings for almost exactly what the "real" ones cost!

Check out Better than diamond They have full created diamonds, diamond coated synthetics, and processed diamonds that are some of the most flaw free natural diamonds.

Well since he isn't planning on selling them until at LEAST January I would say they don't exist right now on the market. I did state that there were companies targeting this fall, guess the schedule slipped a bit =) Besides the prices quoted are 10-50% off, or an average of ~2/3rds which is what I stated. The cost savings aren't that significant. My comment was on the current state of the commercial gem business, not what might or might not be on the market going forward. BTW the earnings I am buying are Asha diamond simulants from Better than diamonds They have diamond simulants, artificial diamonds, and improved natural diamonds where impurities are driven out through physical processes. The Asha's are the only "cheap" thing they sell. They are a high quality CZ that are diamond plated through plasma vapor deposition which gives them the sparkle are wear of diamonds at a fraction of the price.

Look at their Asha stone. My wife and I got one of those for our engagement, and the jewlers who put together the ring said that they were fooled from two feet away. And it's harder than anything else non-diamond.

Maybe someday we'll replace it with an actual synthetic diamond!

I guesss synthetic diamonds have been around for a while:

• Google Results...
• Google even had an advertisement link..